There is no greater love than ________ who devotes his whole life ________ 　mankind.

A．that of a man; to benefiting

B．a man; to benefiting

C．that of a man’s; benefits

D．a man’s love; in benefiting

为了确诊，以下哪一种检查是不必要的

A．人格测验
B．脑电图
C．心电图
D．经颅多普勒
E．脑CT